A
但是这里about是副词,大约大概.
每周几次前面是不用介词的.这里about是用来形容这个每周一次只是大概.并不是完全精准.
也可以用around,approximately 都是副词大约的意思.
每周几次（once/twice/three …times a week）前面用什么介词 A about B for C
2个回答
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